Isla da Pascua-D (Chile) Site History
History Summary
| Station | Isla da Pascua-D |
|---|---|
| Country | Chile |
| Latitude | 27° 09.0' S |
| Longitude | 109° 26.9' W |
| GLOSS No | 137 |
| Time Reference | GMT (hours 00-23) |
| Contributor | UH Sea Level Center |
| Instrument Type | Fischer and Porter Analog-to-Digital Recorder |
| Site of Gauge | |
| Observational periods | 1977-1984 |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed benchmarks; however, these benchmarks are not linked to the benchmarks used by other tide records at this site. Thus, this data set is independent.
Benchmarks
| Benchmarks | Description |
|---|---|
| BM No. 15 | It is a 6cm bronze disk stamped CF 15, set in cement on the right corner at the front of the tide house base. |
| BM No. 16 | It is a 6cm bronze disk stamped CF 16, set in cement at the south west corner of the warehouse located 150m south of the tide house. |
| BM No. 17 | It is a 6cm bronze disk stamped CF 17, set in cement at the gate of the cold storage plant. |
Quality Assessment by the UH Sea Level Centre
Comment
The daily and monthly means reveal no apparent changes in the reference level. Large deviations with a period from 1 to 3 days occur during the winter season associated with weather events.
| Year | CI(%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1977 | 77 | 282-283 | none | 150,157,351 |
| 1978 | 100 | none | none | none |
| 1979 | 89 | 1-32,135-139,362-365 | none | none |
| 1980 | 99 | 1,247-250 | none | 138 |
| 1981 | 100 | none | none | none |
| 1982 | 99 | 65-67 | none | none |
| 1983 | 92 | 32-60 | none | none |
| 1984 | 58 | 121-128 | none | none |
